ANATOMY

Detailed explanation-1: -“Neurons do not have a fixed lifespan, ” says Magrassi. “They may survive forever. It’s the body that contains them that die. If you put them in a longer-living body, they survive as long as the new body allows them to.

Detailed explanation-2: -It is likely that humans are born with all of the nerve cells (neurons) that will serve them throughout life. For all practical purposes, when our neurons die, they are lost forever.

Detailed explanation-3: -The central nervous system does not have these cells. Schwann cells can help damaged nerves regenerate and restore function. On average, damaged nerves can grow back at a rate of about 1 inch per month or 1 millimeter per day. Surgery is needed if there is significant scar tissue or a gap between cut nerve ends.

Detailed explanation-4: -The longest living cells are ‘Neurons’. Neurons are unique because of the fact that the mature cells oppose division to create new cells after development in the foetus. While other cells in the body die and regenerate, many neurons remain the same throughout a person’s lifespan.